Distant Intradural Metastasis by Direct Seeding Through Dural Opening From the Metastasis of Rectal Cancer

Few cases of intradural metastasis of a non-neurogenic origin, without antecedent cerebral metastasis, have been reported.To the best of our knowledge; however, this is the first reported case of distant tumor metastasis via seeding to the intradural space through a dural opening, which formed a tumor mass without antecedent brain metastasis at a different spine level.The medical records and imaging studies of a 67-year-old woman suffering from lower back pain and paresis of the lower extremities, were reviewed.She had previously had rectal cancer.A decompressive laminectomy and excision of the intradural mass were performed.The histopathology study confirmed her original diagnosis.